iio: dac: ltc2664: Use devm_mutex_init()

Use devm_mutex_init() which is helpful with CONFIG_DEBUG_MUTEXES.

Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
David Carlier 2026-04-10 20:37:36 +01:00 • committed by Jonathan Cameron
commit be186094ee